Home / 13,515.38-20,283.36-10,889.30

Finding the Fourth Proportional to 13,515.38, 20,283.36 and 10,889.30

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Solution

The fourth proportional to 13,515.38, 20,283.36 and 10,889.30 is: 16,342.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,515.38 : 20,283.36 = 10,889.30 : x
  2. Step 2: Convert to fraction form
    13,515.38/20,283.36 = 10,889.30/x
  3. Step 3: Cross multiply
    13,515.38x = 20,283.36 × 10,889.30
  4. Step 4: Simplify right side
    13,515.38x = 220,871,592.05
  5. Step 5: Solve for x
    x = 220,871,592.05/13,515.38
  6. Step 6: Final answer
    x = 16,342.24

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.